How about Google? They definitely listen to suggestions. They have made two really nice improvements. First, they have added the ability to have multiple teachers in a Google Classroom. See my previous post about getting started with Google Classroom, if you want to get going. Now you can invite another teacher to help out. This is great. That teacher can do everything in the class, except delete the class. The teacher is invited through the "About" section of the course.
The other new feature is the ability to create announcements and assignments and save them for later. You can create the assignment without the students seeing it. Then, when you want them to have the assignment, you make it active. This is an awesome feature for teachers who like to work ahead, without the students knowing what is coming.
I really give it up to Google for listening to the suggestions teachers have made. Give Google Classroom a try, it will really help your sharing of documents with your students.